19730475

素因数分解:

$3^2\times 5^2\times {\mathrm{87691}}^1$

素因数の和:87707

約数の個数: 18

約数和(自身を含む): 35339876

約数和(自身を除く): 15609401

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 87691, 263073, 438455, 789219, 1315365, 2192275, 3946095, 6576825, 19730475]

約数ペア:

[(1, 19730475), (3, 6576825), (5, 3946095), (9, 2192275), (15, 1315365), (25, 789219), (45, 438455), (75, 263073), (225, 87691)]